Boot Problem after Kernel Upgrade

[Joe St.Clair]

I am running RedHat 7.2 and using ext3 file system with software raid, 
using 2 20gig drives.  The raid drive(s) are my boot drive.  The 2 
drives are identical and are used something like this /dev/hda1 = ext3, 
/dev/hdb1 = ext3, /dev/hda2 = swap, and /dev/hdb2 = swap.  I made 
everything between the 2 drives the same.  The mirrored drive is 
/dev/hda1 and /dev/hda2.  The system has been running very well.

Over the weekend I did a kernel upgrade.  The upgrade went ok and will 
boot and run from a floppy drive with no problems.  But if I attempt to 
boot from the raid drive it will only boot the old kernel.  I have 
updated grub.conf and have even attempted to enter the commands for 
booting from the command line.  The grub menu never shows the commands 
entered into the grub.conf file and I receive a error "Can't find files" 
if I attempt to enter the command line.

I have attempted to find what I need to change on the RedHat site but I 
can't find any information about how to update grub while booting from a 
raid/ext3 file system.

Anyone have any ideas?

Thanks in advance.